目录

11.3.21读超时计数器（ MODE43 * = 0 ） ..................................... .................................................. .. 11-61

12. TX4951B处理器中断............................................................................................................................. 12-1

12.1

12.2

12.3

12.4

12.5

非屏蔽Interrupt................................................................................................................................. 12-1

外部中断....................................................................................................................................... 12-1

软件中断........................................................................................................................................ 12-1

定时器中断............................................................................................................................................. 12-2

主张Interrupts...................................................................................................................................... 12-3

13.省电模式............................................................................................................................................ 13-1

13.1 HALT模式.................................................................................................................................................... 13-1

13.2

13.3

14.1

14.2

打瞌睡Mode................................................................................................................................................... 13-1

状态班次................................................................................................................................................. 13-2

什么边界扫描........................................................................................................................ 14-1

信号Summary........................................................................................................................................... 14-2

14. JTAG Interface...................................................................................................................................................... 14-1

14.3 JTAG控制器和寄存器.................................................................................................................... 14-3

14.3.1指令寄存器............................................................................................................................. 14-3

14.3.2旁路注册................................................................................................................................... 14-4

14.3.3边界扫描Register...................................................................................................................... 14-5

14.3.4设备识别寄存器............................................................................................................. 14-5

14.3.5测试访问端口(TAP)........................................................................................................................ 14-6

14.3.6 TAP控制器.................................................................................................................................... 14-6

14.3.7控制器Reset................................................................................................................................... 14-6

14.3.8 TAP控制器.................................................................................................................................... 14-7

14.4说明JTAG................................................................................................................................. 14-11

14.4.1 EXTEST Instruction................................................................................................................... 14-11

14.4.2通过SAMPLE / PRELOAD指令.......................................... .................................................. 14-12 ..

14.4.3旁路Instruction................................................................................................................... 14-13

14.4.4 IDCODE指令.................................................................................................................. 14-13

14.5

注意14-14

15. CPU指令集Summary.............................................................................................................................. 15-1

15.1 Introduction.................................................................................................................................................. 15-1

15.2指令Format........................................................................................................................................ 15-1

15.3指令集概述............................................................................................................................. 15-2

15.3.1加载和存储指令（见表15.3.1 ） ..................................... .................................................. 15-2 ..

15.3.2计算指令（见表15.3.2 ） ....................................... .................................................. 。 15-3

15.3.3跳转和转移指令（见表15.3.3 ） ..................................... ................................................. 15 -4

15.3.4特殊说明（见表15.3.4 ） ...................................................................................................... 15-5

15.3.5异常说明（表15.3.5).................................................................................................. 15-5

15.3.6协处理器指令（见表15.3.6 ） ....................................... .................................................. 15-6 .....

15.3.7 CP0指令（表15.3.7)........................................................................................................... 15-6

15.3.8乘法和除法指令（见表15.3.8 ） ..................................... ............................................ 15-7

15.3.9调试说明（见表15.3.9 ） ....................................................................................................... 15-7

15.3.10其他说明（表15.3.10)....................................................................................................... 15-7

15.4

15.5

15.6

指令执行周期....................................................................................................................... 15-7

定义访问Types................................................................................................................................. 15-8

CPU的指令操作码位编码............................................ .................................................. 15-9 ....

16.电气特性...................................................................................................................................... 16-1

16.1电气Characteristics.............................................................................................................................. 16-1

16.1.1绝对最大Ratings................................................................................................................ 16-1

16.1.2推荐工作Conditions.................................................................................................. 16-1

16.1.3 DC Characteristics............................................................................................................................... 16-2

16.1.4交流Characteristics............................................................................................................................... 16-3

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